diff options
| -rw-r--r-- | drivers/video/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/video/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/mmp/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/video/mmp/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/mmp/core.c | 258 | ||||
| -rw-r--r-- | include/video/mmp_disp.h | 352 |
6 files changed, 618 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index a913997c7b75..6c2c991af6fa 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -2431,6 +2431,7 @@ config FB_PUV3_UNIGFX source "drivers/video/omap/Kconfig" source "drivers/video/omap2/Kconfig" source "drivers/video/exynos/Kconfig" +source "drivers/video/mmp/Kconfig" source "drivers/video/backlight/Kconfig" if VT diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 3363f674237f..0577f834fdcd 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -106,6 +106,7 @@ obj-$(CONFIG_FB_ASILIANT) += asiliantfb.o obj-$(CONFIG_FB_PXA) += pxafb.o obj-$(CONFIG_FB_PXA168) += pxa168fb.o obj-$(CONFIG_PXA3XX_GCU) += pxa3xx-gcu.o +obj-$(CONFIG_MMP_DISP) += mmp/ obj-$(CONFIG_FB_W100) += w100fb.o obj-$(CONFIG_FB_TMIO) += tmiofb.o obj-$(CONFIG_FB_AU1100) += au1100fb.o diff --git a/drivers/video/mmp/Kconfig b/drivers/video/mmp/Kconfig new file mode 100644 index 000000000000..055433624526 --- /dev/null +++ b/drivers/video/mmp/Kconfig @@ -0,0 +1,5 @@ +menuconfig MMP_DISP + tristate "Marvell MMP Display Subsystem support" + depends on CPU_PXA910 || CPU_MMP2 || CPU_MMP3 || CPU_PXA988 + help + Marvell Display Subsystem support. diff --git a/drivers/video/mmp/Makefile b/drivers/video/mmp/Makefile new file mode 100644 index 000000000000..820eb10ac2dd --- /dev/null +++ b/drivers/video/mmp/Makefile @@ -0,0 +1 @@ +obj-y += core.o diff --git a/drivers/video/mmp/core.c b/drivers/video/mmp/core.c new file mode 100644 index 000000000000..9ed83419038b --- /dev/null +++ b/drivers/video/mmp/core.c @@ -0,0 +1,258 @@ +/* + * linux/drivers/video/mmp/common.c + * This driver is a common framework for Marvell Display Controller + * + * Copyright (C) 2012 Marvell Technology Group Ltd. + * Authors: Zhou Zhu <zzhu3@marvell.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <linux/slab.h> +#include <linux/dma-mapping.h> +#include <linux/export.h> +#include <video/mmp_disp.h> + +static struct mmp_overlay *path_get_overlay(struct mmp_path *path, + int overlay_id) +{ + if (path && overlay_id < path->overlay_num) + return &path->overlays[overlay_id]; + return 0; +} + +static int path_check_status(struct mmp_path *path) +{ + int i; + for (i = 0; i < path->overlay_num; i++) + if (path->overlays[i].status) + return 1; + + return 0; +} + +/* + * Get modelist write pointer of modelist. + * It also returns modelist number + * this function fetches modelist from phy/panel: + * for HDMI/parallel or dsi to hdmi cases, get from phy + * or get from panel + */ +static int path_get_modelist(struct mmp_path *path, + struct mmp_mode **modelist) +{ + BUG_ON(!path || !modelist); + + if (path->panel && path->panel->get_modelist) + return path->panel->get_modelist(path->panel, modelist); + + return 0; +} + +/* + * panel list is used to pair panel/path when path/panel registered + * path list is used for both buffer driver and platdriver + * plat driver do path register/unregister + * panel driver do panel register/unregister + * buffer driver get registered path + */ +static LIST_HEAD(panel_list); +static LIST_HEAD(path_list); +static DEFINE_MUTEX(disp_lock); + +/* + * mmp_register_panel - register panel to panel_list and connect to path + * @p: panel to be registered + * + * this function provides interface for panel drivers to register panel + * to panel_list and connect to path which matchs panel->plat_path_name. + * no error returns when no matching path is found as path register after + * panel register is permitted. + */ +void mmp_register_panel(struct mmp_panel *panel) +{ + struct mmp_path *path; + + mutex_lock(&disp_lock); + + /* add */ + list_add_tail(&panel->node, &panel_list); + + /* try to register to path */ + list_for_each_entry(path, &path_list, node) { + if (!strcmp(panel->plat_path_name, path->name)) { + dev_info(panel->dev, "connect to path %s\n", + path->name); + path->panel = panel; + break; + } + } + + mutex_unlock(&disp_lock); +} +EXPORT_SYMBOL_GPL(mmp_register_panel); + +/* + * mmp_unregister_panel - unregister panel from panel_list and disconnect + * @p: panel to be unregistered + * + * this function provides interface for panel drivers to unregister panel + * from panel_list and disconnect from path. + */ +void mmp_unregister_panel(struct mmp_panel *panel) +{ + struct mmp_path *path; + + mutex_lock(&disp_lock); + list_del(&panel->node); + + list_for_each_entry(path, &path_list, node) { + if (path->panel && path->panel == panel) { + dev_info(panel->dev, "disconnect from path %s\n", + path->name); + path->panel = NULL; + break; + } + } + mutex_unlock(&disp_lock); +} +EXPORT_SYMBOL_GPL(mmp_unregister_panel); + +/* + * mmp_get_path - get path by name + * @p: path name + * + * this function checks path name in path_list and return matching path + * return NULL if no matching path + */ +struct mmp_path *mmp_get_path(const char *name) +{ + struct mmp_path *path; + int found = 0; + + mutex_lock(&disp_lock); + list_for_each_entry(path, &path_list, node) { + if (!strcmp(name, path->name)) { + found = 1; + break; + } + } + mutex_unlock(&disp_lock); + + return found ? path : NULL; +} +EXPORT_SYMBOL_GPL(mmp_get_path); + +/* + * mmp_register_path - init and register path by path_info + * @p: path info provided by display controller + * + * this function init by path info and register path to path_list + * this function also try to connect path with panel by name + */ +struct mmp_path *mmp_register_path(struct mmp_path_info *info) +{ + int i; + size_t size; + struct mmp_path *path = NULL; + struct mmp_panel *panel; + + size = sizeof(struct mmp_path) + + sizeof(struct mmp_overlay) * info->overlay_num; + path = kzalloc(size, GFP_KERNEL); + if (!path) + goto failed; + + /* path set */ + mutex_init(&path->access_ok); + path->dev = info->dev; + path->id = info->id; + path->name = info->name; + path->output_type = info->output_type; + path->overlay_num = info->overlay_num; + path->plat_data = info->plat_data; + path->ops.set_mode = info->set_mode; + + mutex_lock(&disp_lock); + /* get panel */ + list_for_each_entry(panel, &panel_list, node) { + if (!strcmp(info->name, panel->plat_path_name)) { + dev_info(path->dev, "get panel %s\n", panel->name); + path->panel = panel; + break; + } + } + + dev_info(path->dev, "register %s, overlay_num %d\n", + path->name, path->overlay_num); + + /* default op set: if already set by driver, never cover it */ + if (!path->ops.check_status) + path->ops.check_status = path_check_status; + if (!path->ops.get_overlay) + path->ops.get_overlay = path_get_overlay; + if (!path->ops.get_modelist) + path->ops.get_modelist = path_get_modelist; + + /* step3: init overlays */ + for (i = 0; i < path->overlay_num; i++) { + path->overlays[i].path = path; + path->overlays[i].id = i; + mutex_init(&path->overlays[i].access_ok); + path->overlays[i].ops = info->overlay_ops; + } + + /* add to pathlist */ + list_add_tail(&path->node, &path_list); + + mutex_unlock(&disp_lock); + return path; + +failed: + kfree(path); + mutex_unlock(&disp_lock); + return NULL; +} +EXPORT_SYMBOL_GPL(mmp_register_path); + +/* + * mmp_unregister_path - unregister and destory path + * @p: path to be destoried. + * + * this function registers path and destorys it. + */ +void mmp_unregister_path(struct mmp_path *path) +{ + int i; + + if (!path) + return; + + mutex_lock(&disp_lock); + /* del from pathlist */ + list_del(&path->node); + + /* deinit overlays */ + for (i = 0; i < path->overlay_num; i++) + mutex_destroy(&path->overlays[i].access_ok); + + mutex_destroy(&path->access_ok); + + kfree(path); + mutex_unlock(&disp_lock); + + dev_info(path->dev, "de-register %s\n", path->name); +} +EXPORT_SYMBOL_GPL(mmp_unregister_path); diff --git a/include/video/mmp_disp.h b/include/video/mmp_disp.h new file mode 100644 index 000000000000..b9dd1fbb0082 --- /dev/null +++ b/include/video/mmp_disp.h @@ -0,0 +1,352 @@ +/* + * linux/include/video/mmp_disp.h + * Header file for Marvell MMP Display Controller + * + * Copyright (C) 2012 Marvell Technology Group Ltd. + * Authors: Zhou Zhu <zzhu3@marvell.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#ifndef _MMP_DISP_H_ +#define _MMP_DISP_H_ +#include <linux/kthread.h> + +enum { + PIXFMT_UYVY = 0, + PIXFMT_VYUY, + PIXFMT_YUYV, + PIXFMT_YUV422P, + PIXFMT_YVU422P, + PIXFMT_YUV420P, + PIXFMT_YVU420P, + PIXFMT_RGB565 = 0x100, + PIXFMT_BGR565, + PIXFMT_RGB1555, + PIXFMT_BGR1555, + PIXFMT_RGB888PACK, + PIXFMT_BGR888PACK, + PIXFMT_RGB888UNPACK, + PIXFMT_BGR888UNPACK, + PIXFMT_RGBA888, + PIXFMT_BGRA888, + PIXFMT_RGB666, /* for output usage */ + PIXFMT_PSEUDOCOLOR = 0x200, +}; + +static inline int pixfmt_to_stride(int pix_fmt) +{ + switch (pix_fmt) { + case PIXFMT_RGB565: + case PIXFMT_BGR565: + case PIXFMT_RGB1555: + case PIXFMT_BGR1555: + case PIXFMT_UYVY: + case PIXFMT_VYUY: + case PIXFMT_YUYV: + return 2; + case PIXFMT_RGB888UNPACK: + case PIXFMT_BGR888UNPACK: + case PIXFMT_RGBA888: + case PIXFMT_BGRA888: + return 4; + case PIXFMT_RGB888PACK: + case PIXFMT_BGR888PACK: + return 3; + case PIXFMT_YUV422P: + case PIXFMT_YVU422P: + case PIXFMT_YUV420P: + case PIXFMT_YVU420P: + case PIXFMT_PSEUDOCOLOR: + return 1; + default: + return 0; + } +} + +/* parameters used by path/overlay */ +/* overlay related para: win/addr */ +struct mmp_win { + /* position/size of window */ + u16 xsrc; + u16 ysrc; + u16 xdst; + u16 ydst; + u16 xpos; + u16 ypos; + u16 left_crop; + u16 right_crop; + u16 up_crop; + u16 bottom_crop; + int pix_fmt; +}; + +struct mmp_addr { + /* phys address */ + u32 phys[6]; +}; + +/* path related para: mode */ +struct mmp_mode { + const char *name; + u32 refresh; + u32 xres; + u32 yres; + u32 left_margin; + u32 right_margin; + u32 upper_margin; + u32 lower_margin; + u32 hsync_len; + u32 vsync_len; + u32 hsync_invert; + u32 vsync_invert; + u32 invert_pixclock; + u32 pixclock_freq; + int pix_fmt_out; +}; + +/* main structures */ +struct mmp_path; +struct mmp_overlay; +struct mmp_panel; + +/* status types */ +enum { + MMP_OFF = 0, + MMP_ON, +}; + +static inline const char *stat_name(int stat) +{ + switch (stat) { + case MMP_OFF: + return "OFF"; + case MMP_ON: + return "ON"; + default: + return "UNKNOWNSTAT"; + } +} + +struct mmp_overlay_ops { + /* should be provided by driver */ + void (*set_fetch)(struct mmp_overlay *overlay, int fetch_id); + void (*set_onoff)(struct mmp_overlay *overlay, int status); + void (*set_win)(struct mmp_overlay *overlay, struct mmp_win *win); + int (*set_addr)(struct mmp_overlay *overlay, struct mmp_addr *addr); +}; + +/* overlay describes a z-order indexed slot in each path. */ +struct mmp_overlay { + int id; + const char *name; + struct mmp_path *path; + + /* overlay info: private data */ + int dmafetch_id; + struct mmp_addr addr; + struct mmp_win win; + + /* state */ + int open_count; + int status; + struct mutex access_ok; + + struct mmp_overlay_ops *ops; +}; + +/* panel type */ +enum { + PANELTYPE_ACTIVE = 0, + PANELTYPE_SMART, + PANELTYPE_TV, + PANELTYPE_DSI_CMD, + PANELTYPE_DSI_VIDEO, +}; + +struct mmp_panel { + /* use node to register to list */ + struct list_head node; + const char *name; + /* path name used to connect to proper path configed */ + const char *plat_path_name; + struct device *dev; + int panel_type; + void *plat_data; + int (*get_modelist)(struct mmp_panel *panel, + struct mmp_mode **modelist); + void (*set_mode)(struct mmp_panel *panel, + struct mmp_mode *mode); + void (*set_onoff)(struct mmp_panel *panel, + int status); +}; + +struct mmp_path_ops { + int (*check_status)(struct mmp_path *path); + struct mmp_overlay *(*get_overlay)(struct mmp_path *path, + int overlay_id); + int (*get_modelist)(struct mmp_path *path, + struct mmp_mode **modelist); + + /* follow ops should be provided by driver */ + void (*set_mode)(struct mmp_path *path, struct mmp_mode *mode); + void (*set_onoff)(struct mmp_path *path, int status); + /* todo: add query */ +}; + +/* path output types */ +enum { + PATH_OUT_PARALLEL, + PATH_OUT_DSI, + PATH_OUT_HDMI, +}; + +/* path is main part of mmp-disp */ +struct mmp_path { + /* use node to register to list */ + struct list_head node; + + /* init data */ + struct device *dev; + + int id; + const char *name; + int output_type; + struct mmp_panel *panel; + void *plat_data; + + /* dynamic use */ + struct mmp_mode mode; + + /* state */ + int open_count; + int status; + struct mutex access_ok; + + struct mmp_path_ops ops; + + /* layers */ + int overlay_num; + struct mmp_overlay overlays[0]; +}; + +extern struct mmp_path *mmp_get_path(const char *name); +static inline void mmp_path_set_mode(struct mmp_path *path, + struct mmp_mode *mode) +{ + if (path) + path->ops.set_mode(path, mode); +} +static inline void mmp_path_set_onoff(struct mmp_path *path, int status) +{ + if (path) + path->ops.set_onoff(path, status); +} +static inline int mmp_path_get_modelist(struct mmp_path *path, + struct mmp_mode **modelist) +{ + if (path) + return path->ops.get_modelist(path, modelist); + return 0; +} +static inline struct mmp_overlay *mmp_path_get_overlay( + struct mmp_path *path, int overlay_id) +{ + if (path) + return path->ops.get_overlay(path, overlay_id); + return NULL; +} +static inline void mmp_overlay_set_fetch(struct mmp_overlay *overlay, + int fetch_id) +{ + if (overlay) + overlay->ops->set_fetch(overlay, fetch_id); +} +static inline void mmp_overlay_set_onoff(struct mmp_overlay *overlay, + int status) +{ + if (overlay) + overlay->ops->set_onoff(overlay, status); +} +static inline void mmp_overlay_set_win(struct mmp_overlay *overlay, + struct mmp_win *win) +{ + if (overlay) + overlay->ops->set_win(overlay, win); +} +static inline int mmp_overlay_set_addr(struct mmp_overlay *overlay, + struct mmp_addr *addr) +{ + if (overlay) + return overlay->ops->set_addr(overlay, addr); + return 0; +} + +/* + * driver data is set from each detailed ctrl driver for path usage + * it defined a common interface that plat driver need to implement + */ +struct mmp_path_info { + /* driver data, set when registed*/ + const char *name; + struct device *dev; + int id; + int output_type; + int overlay_num; + void (*set_mode)(struct mmp_path *path, struct mmp_mode *mode); + void (*set_onoff)(struct mmp_path *path, int status); + struct mmp_overlay_ops *overlay_ops; + void *plat_data; +}; + +extern struct mmp_path *mmp_register_path( + struct mmp_path_info *info); +extern void mmp_unregister_path(struct mmp_path *path); +extern void mmp_register_panel(struct mmp_panel *panel); +extern void mmp_unregister_panel(struct mmp_panel *panel); + +/* defintions for platform data */ +/* interface for buffer driver */ +struct mmp_buffer_driver_mach_info { + const char *name; + const char *path_name; + int overlay_id; + int dmafetch_id; + int default_pixfmt; +}; + +/* interface for controllers driver */ +struct mmp_mach_path_config { + const char *name; + int overlay_num; + int output_type; + u32 path_config; + u32 link_config; +}; + +struct mmp_mach_plat_info { + const char *name; + const char *clk_name; + int path_num; + struct mmp_mach_path_config *paths; +}; + +/* interface for panel drivers */ +struct mmp_mach_panel_info { + const char *name; + void (*plat_set_onoff)(int status); + const char *plat_path_name; +}; +#endif /* _MMP_DISP_H_ */ |